scanner not reading my car
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
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From: panama panama
scanner not reading my car
couple days ago I buy my self a auto x ray xp 240
here is a link on ebay in case you wander
http://www.ebay.com/itm/251310013824...84.m1439.l2649
I have a 1986 vette. also my check ingine light never had work.
when I connect the scanner I get and error. it say. the scanner can not comunicated with the car. read the manual.
I read the manual 20 times allready and the set up is good
why do I get and error. I can not get codes or scan the car
here is a link on ebay in case you wander
http://www.ebay.com/itm/251310013824...84.m1439.l2649
I have a 1986 vette. also my check ingine light never had work.
when I connect the scanner I get and error. it say. the scanner can not comunicated with the car. read the manual.
I read the manual 20 times allready and the set up is good
why do I get and error. I can not get codes or scan the car
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
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From: panama panama
Drifting
Joined: May 2013
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From: Reno Nevada
http://www.chevythunder.com/Flow%20c...roubleshooting Flow Chart Pages
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
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From: panama panama
The bulb in the SES light shouldn't affect the scanner. My initial thought would be a bad ecm, or circuit from the ecm to the aldl. see if this helps:
http://www.chevythunder.com/Flow%20c...roubleshooting Flow Chart Pages
http://www.chevythunder.com/Flow%20c...roubleshooting Flow Chart Pages
Safety Car
Joined: Jan 2004
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http://www.corvettephotographs.com/c4vettes/codes.htm
If you can get the SES to flash by jumpering the ALDL connector you know the circuit is good (assuming your SES bulb is good ? )
Does the light come on when you 1st turn the Ign on as it should?
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
Try pulling the codes the factory way
http://www.corvettephotographs.com/c4vettes/codes.htm
If you can get the SES to flash by jumpering the ALDL connector you know the circuit is good (assuming your SES bulb is good ? )
Does the light come on when you 1st turn the Ign on as it should?
http://www.corvettephotographs.com/c4vettes/codes.htm
If you can get the SES to flash by jumpering the ALDL connector you know the circuit is good (assuming your SES bulb is good ? )
Does the light come on when you 1st turn the Ign on as it should?
Like I say I never saw that light come on
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Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
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From: panama panama
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
Drifting
Joined: May 2013
Posts: 1,736
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From: Reno Nevada
Have you gotten this too work yet? You could try it with another obd1 vehicle to see if maybe it's a problem with the scanner itself?
Thread Starter
Drifting
Joined: Aug 2011
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From: panama panama
Thread Starter
Drifting
Joined: Aug 2011
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From: panama panama
tomorrow I will try to make some test on the ecm. following this instructions
http://www.chevythunder.com/SES%20chart%20A-1.htm
but Iam a little confuse here. on the chart "where it say:probe ecm term A5 with test light"
my question. sure I use the testlight on the conector or in the ecm it self. can someone just clarify this point to me thanks
http://www.chevythunder.com/SES%20chart%20A-1.htm
but Iam a little confuse here. on the chart "where it say:probe ecm term A5 with test light"
my question. sure I use the testlight on the conector or in the ecm it self. can someone just clarify this point to me thanks
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
That test checks to see if the SES bulb is good.
Disconnect ECM connectors.
Turn on ignition.
Connect terminal A5 in the connector to ground, either with a wire or a test light.
The SES light should come on.
If the SES light does NOT come on then it is probably a bad SES bulb, but could be a problem in the wiring.
I know you have a FSM, so look on page 6E3-A-18.
Disconnect ECM connectors.
Turn on ignition.
Connect terminal A5 in the connector to ground, either with a wire or a test light.
The SES light should come on.
If the SES light does NOT come on then it is probably a bad SES bulb, but could be a problem in the wiring.
I know you have a FSM, so look on page 6E3-A-18.
Last edited by Cliff Harris; Oct 19, 2013 at 11:20 PM. Reason: Added clarification. "A5 in the connector".
Thread Starter
Drifting
Joined: Aug 2011
Posts: 1,861
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From: panama panama
That test checks to see if the SES bulb is good.
Disconnect ECM connectors.
Turn on ignition.
Connect terminal A5 to ground, either with a wire or a test light.
The SES light should come on.
If the SES light does NOT come on then it is probably a bad SES bulb, but could be a problem in the wiring.
I know you have a FSM, so look on page 6E3-A-18.
Disconnect ECM connectors.
Turn on ignition.
Connect terminal A5 to ground, either with a wire or a test light.
The SES light should come on.
If the SES light does NOT come on then it is probably a bad SES bulb, but could be a problem in the wiring.
I know you have a FSM, so look on page 6E3-A-18.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
According to the diagram on page 6E3-A-18, the power for the SES bulb comes from the INJ1 fuse. If your engine runs then that fuse must be OK.
I think you should trace out the wire from ECM connector A5 to the SES bulb. It's probably broken or cut or something.
I think you should trace out the wire from ECM connector A5 to the SES bulb. It's probably broken or cut or something.
Thread Starter
Drifting
Joined: Aug 2011
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From: panama panama
I will do that today thanks
Thread Starter
Drifting
Joined: Aug 2011
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From: panama panama
after doing more test with terminal A5. I find out that the terminal wire is ok. also at the other end Iam getting good volts with the key to on position.. So I direct my attention to the old information plastic circuit. I find out that is was making some bad contact.
now the ses light is allways on.
I follow the troubleshooting on chart A2 . and it say to get a new prom
I had 2 old ecm at home. so I did the swap and test with the same prom. and no change.
acording to the chart I need a new prom.
i been looking at ebay. and the cost is about $200 that is a big problem.
Is there a way to check the ecm prom to find out if is good or bad????????? I dont like the Idea of getting a new $200 prom. just to find out that make s no diferance
now the ses light is allways on.
I follow the troubleshooting on chart A2 . and it say to get a new prom
I had 2 old ecm at home. so I did the swap and test with the same prom. and no change.
acording to the chart I need a new prom.
i been looking at ebay. and the cost is about $200 that is a big problem.
Is there a way to check the ecm prom to find out if is good or bad????????? I dont like the Idea of getting a new $200 prom. just to find out that make s no diferance